13th Annual Meeting of the Helmholtz Alliance "Physics at the Terascale"

Session

Physics beyond the SM

26 Nov 2019, 11:30

DESY Hamburg

Conveners

Physics beyond the SM

• Thorsten Ohl (Universität Würzburg)
• Samuel Bein (University of Hamburg)
• Alexander Mann (Ludwig-Maximilians-Universität München)
• Saranya Samik Ghosh (RWTH Aachen University)
• Frank Ellinghaus

Physics beyond the SM

• Frank Ellinghaus
• Thorsten Ohl (Universität Würzburg)
• Samuel Bein (University of Hamburg)
• Saranya Samik Ghosh (RWTH Aachen University)
• Alexander Mann (Ludwig-Maximilians-Universität München)

Physics beyond the SM

• Samuel Bein (University of Hamburg)
• Saranya Samik Ghosh (RWTH Aachen University)
• Thorsten Ohl (Universität Würzburg)
• Alexander Mann (Ludwig-Maximilians-Universität München)
• Frank Ellinghaus

1. Light stops, heavy gluinos, and a novel solution to the little hierarchy problem

Prof. Ulrich Nierste (Karlsruhe Institute of Technology)

26/11/2019, 11:30

Radiative corrections with new heavy particles coupling to Higgs doublets destabilize the electroweak scale and require an ad-hoc counterterm cancelling the large loop contribution. If the mass scale m1 of these new particles in in the TeV range, this feature constitutes the "little fine-tuning problem". We consider the case that the new-physics spectrum has a little hierarchy with two...

28. Searches for sleptons, charginos and neutralinos with compressed mass spectra using the ATLAS detector at sqrt(s) = 13 TeV

Mr Jorge Andres Sabater Iglesias (ATLAS)

26/11/2019, 11:50

11. Search for Higgsino production in SUSY scenarios with a compressed mass spectrum

Mr Yuval Nissan (Experimental Particle Group)

26/11/2019, 12:10

A search for leptonic decays of Higgsino-like neutralinos in the case of a compressed mass spectrum using a track, a reconstructed lepton and missing transverse momentum is presented. We consider the case of a second-lightest neutralino decaying into a dark matter candidate - lightest neutralino - and two leptons via an off-shell Z boson. In the case of a very small mass differences between...

7. Anomalous magnetic moments from asymptotic safety

Mrs Clara Hormigos-Feliu (TU Dortmund)

26/11/2019, 12:30

The measurements of the muon and electron anomalous magnetic moments hint at physics beyond the standard model. We explain why asymptotically safe extensions based on an enlarged scalar sector and Yukawa couplings between leptons and new vector-like fermions explain the data naturally. Models stabilize the Higgs potential, predict the tau anomalous magnetic moment, and feature new...

10. Search for new physics with leptons in the final state

Dr Kerstin Hoepfner (RWTH Aachen)

26/11/2019, 14:00

This presentation is a potpourri of Aachen results searching for BSM. One key search looks for excited leptons (e* and mu*) in the contact interaction channel providing the maximum sensitivity in terms of lstar mass. To put it in context, its sensitivity in terms of mass and compositeness scale Lambda is compared with the llg channel. We also search for new heavy charged boson, W', in the...

5. The tail of Wh: another way of probing New Physics with dibosons

Mr Alejo Nahuel Rossia (DESY, HU Berlin)

26/11/2019, 14:25

The lack of evidence of New Physics coming from direct searches of resonances at the LHC calls for an increase in efforts to devise new observables that can indirectly probe New Physics. If new resonances exist but are out of the reach of the LHC or future colliders, they could manifest themselves through a harder p_T spectra with respect to the SM. In this context, the diboson final state has...

29. Searching for the single production of vector-like quarks in the Wb final state with the ATLAS detector at 13TeV

Mr Ferdinand Schenck (Humboldt-Universität)

26/11/2019, 14:45

30. Background estimation for the search of single production of vector-like quarks

Mr Maxx Richard Rahman (Universität Bonn)

26/11/2019, 15:05

31. Probing Higgs Sector New physics in the tail of the di-boson production

Dr Zhuoni Qian (DESY)

26/11/2019, 15:25

32. Search for dark matter produced in association with fully-hadronically decaying top quark pair in events with medium missing transverse energy

Mr Xuanhong Lou (ATLAS)

26/11/2019, 15:45

33. LQ-SP associated with a τ lepton, decaying into charm and neutrino at ATLAS

Patrick Bauer (Universität Bonn)

26/11/2019, 16:05

0. Supersymmetric Higgs Inflation at Colliders

Dr Wolfgang Gregor Hollik (KIT)

27/11/2019, 11:00

We study a scale-invariant minimal supersymmetric Standard Model which allows for an implementation of inflation in the early universe. This model has the same field content as the Next-to-Minimal Supersymmetric Standard Model (NMSSM) thus can be distinguished by observations in the scalar sectors. A crucial role play the singlet components. We point out that there might exist light...

12. Search for SUSY in events with same-flavor opposite-charge dileptons, jets, and missing transverse momentum at CMS

Mr Marius Teroerde (RWTH Aachen University)

27/11/2019, 11:20

The current status of a search for supersymmetry (SUSY) in events with same-flavor opposite-sign lepton pairs is presented. The analysis utilizes data recorded by the CMS detector from 2016 to 2018. As the considered signals include strong production of SUSY particles, jets are also required, along with large missing transverse momentum, which arises from undetected LSPs. An important feature...

3. Chargino search at the ILC

Dr María Teresa Núñez Pardo de Vera (DESY)

27/11/2019, 11:40

The lighter chargino (chi1) is a prime candidate to be the next-to-lightest SUSY particle (the NLSP). Several analyses have been done of chi1 pair-production at the ILC, at specific model-points, showing that detection and property-determination is possible, even for very difficult cases. However, no recent studies have evaluated the reach of the ILC to detect chi1 pair production in...

6. Improved determination of the MSSM SM-like Higgs~mass for large $\tan\beta$, complex input parameters and heavy SUSY

Ivan Sobolev (DESY Theory)

27/11/2019, 12:00

t.b.a.

4. Calculation of the Higgs mass in the MSSM at NNNLO and NNNLL with Xt resummation

Mr Thomas Kwasnitza (TU Dresden)

27/11/2019, 12:20

t.b.a.

34. Search for disappearing tracks with CMS

Mr Viktor Kutzner (UHH)

27/11/2019, 12:40